SIST EN 572-2:2012
(Main)Glass in building - Basic soda lime silicate glass products - Part 2: Float glass
Glass in building - Basic soda lime silicate glass products - Part 2: Float glass
This European Standard specifies dimensional and minimum quality requirements (in respect of optical and visual faults) for float glass, as defined in EN 572-1:2012, for use in building.
This European Standard applies only to float glass supplied in jumbo sizes (see Note 1), split sizes (see Note 2) and oversize plates (see Note 3).
NOTE 1 Jumbo sizes - PLF (plateau largeur de fabrication) - Bandmasse.
NOTE 2 Split sizes - DLF (dimension largeur de fabrication) - Geteilte Bandmasse.
NOTE 3 Oversize plates - these are plates where the nominal length, H, is greater than 6 000 mm. These plates are produced to special order.
EN 572-8 gives information on float glass in sizes (i.e. supplied and final cut sizes) other than those covered by this European Standard.
Glas im Bauwesen - Basiserzeugnisse aus Kalk-Natronsilicatglas - Teil 2: Floatglas
Diese Europäische Norm legt die Anforderungen an Maße und Mindestqualität (in Bezug auf optische und sichtbare Fehler) für Floatglas für das Bauwesen, wie es in EN 572-1:2012 definiert ist, fest.
Diese Europäische Norm ist nur für Floatglas, das in Bandmaßen (siehe Anmerkung 1), in geteilten Band-maßen (siehe Anmerkung 2) und in übergroßen Scheiben (siehe Anmerkung 3) geliefert wird, anwendbar.
ANMERKUNG 1 Bandmaße — Jumbo sizes — PLF (Plateau Largeur de Fabrication).
ANMERKUNG 2 Geteilte Bandmaße — Split sizes — DLF (Dimension Largeur de Fabrication).
ANMERKUNG 3 Übergroße Scheiben — dabei handelt es sich um Scheiben mit der Nennlänge, H, größer als 6 000 mm. Bei diesen Scheiben handelt es sich um Sonderanfertigungen.
EN 572 8 informiert über Floatglas in anderen als in dieser Europäischen Norm aufgeführten Liefer und Festmaßen.
Verre dans la construction - Produits de base : verre de silicate sodocalcique - Partie 2: Glace
La présente Norme européenne détermine les exigences dimensionnelles et les exigences qualitatives minimales (concernant les défauts optiques et les défauts d’aspect) s’appliquant à la glace flottée telle que définie dans le EN 572-1:2012, pour l’utilisation dans la construction.
La présente Norme européenne ne s’applique qu’à la glace flottée fournie en plateaux à largeur de fabrication (voir NOTE 1), en dimensions à largeur de fabrication (voir NOTE 2) et en plateaux grande longueur (voir NOTE 3).
NOTE 1 Jumbo sizes - PLF (plateau largeur de fabrication) - Bandmasse.
NOTE 2 Split sizes - DLF (dimension largeur de fabrication) - Geteilte Bandmasse.
NOTE 3 Plateaux grande longueur - Il s'agit de plateaux dont la longueur nominale, H, est supérieure à 6 000 mm. Ces plateaux font l'objet d'une commande spéciale.
L’EN 572-8 donne des informations sur les glaces flottées fournies dans des dimensions, c'est-à-dire des mesures livrées et des mesures découpées finales, autres que celles couvertes par la présente Norme européenne.
Steklo v gradbeništvu - Osnovni izdelki iz natrij-kalcijevega silikatnega stekla - 2. del: Ravno steklo
Ta evropski standard določa zahteve glede mer in minimalne kakovosti (v zvezi z optičnimi in vizualnimi napakami) za ravno steklo, kot je določeno v standardu FprEN 572-1:2011, za uporabo v gradbeništvu. Ta evropski standard se nanaša le na ravno steklo, dobavljeno v »jumbo« velikostih, razdeljenih ploščah in predimenzioniranih ploščah.
General Information
- Status
- Published
- Public Enquiry End Date
- 28-Feb-2012
- Publication Date
- 25-Sep-2012
- Technical Committee
- STV - Steklo, svetloba in razsvetljava v gradbeništvu
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 27-Jul-2012
- Due Date
- 01-Oct-2012
- Completion Date
- 26-Sep-2012
- Directive
- 89/106/EEC - Construction products
Relations
- Effective Date
- 01-Oct-2012
Overview
EN 572-2:2012 - "Glass in building - Basic soda lime silicate glass products - Part 2: Float glass" (CEN) defines the dimensional and minimum quality requirements for float glass used in building applications. It applies to float glass supplied in jumbo sizes, split sizes, and oversize plates (nominal length H > 6 000 mm are special order). The standard complements EN 572‑1 (definitions and general properties) and EN 572‑8 (supplied and final cut sizes).
Key topics and technical requirements
- Scope & sizes
- Jumbo: nominal lengths 4 500 mm, 5 100 mm or 6 000 mm; nominal width 3 210 mm (typical).
- Split sizes: nominal length 1 000–2 550 mm; nominal width 3 210 mm.
- Oversize plates: H > 6 000 mm (special order).
- Thickness measurement and tolerances
- Actual thickness = average of four measurements (one at centre of each side) using a caliper micrometer (to 0.01 mm).
- Tolerances (rounded to 0.1 mm): 2–6 mm ±0.2 mm; 8–12 mm ±0.3 mm; 15 mm ±0.5 mm; 19 & 25 mm ±1.0 mm.
- Length, width and squareness
- Nominal length and width tolerances: ±5 mm.
- Squareness limits (difference between diagonals) depend on sheet size and thickness and are specified in the standard.
- Optical faults (distortion)
- Zebra test: black/white striped screen (25 mm stripes), back-lit, glass at ~4.5 m from screen, observer ~9 m away; required illuminance 400–1 200 lx.
- Critical viewing angles defined by thickness: for 2 mm glass angle α ≥ 45° (zone D) / 40° (zone d); for ≥3 mm α ≥ 50° / 45°.
- Visual faults
- Spot faults categorized A–D by halo/defect size: A >0.6–1.5 mm, B >1.5–3.0 mm, C >3.0–9.0 mm, D >9.0 mm.
- Acceptance levels for jumbo and split sizes are given (examples: category B average 3 per pane, maximum 5 in any jumbo pane; split-size limits use averages per 20 m²).
- Linear/extended faults acceptance also specified (average basis per 20 t / 20 m² depending on category).
- Measurement methods
- Annex A defines a projection technique (point-source projector and screen) for measuring spot-fault size (halo included).
Applications and users
- Architects, façade engineers and specifiers selecting float glass for glazing and curtain walls.
- Glass manufacturers and quality control teams ensuring product conformity to European building glazing standards.
- Glaziers, window fabricators and building inspectors who verify dimensional tolerances, optical quality and acceptance criteria during procurement and installation.
- Procurement officers and compliance managers referencing EN 572‑2 in contracts and product data sheets.
Related standards
- EN 572-1:2012 - Definitions and general physical/mechanical properties.
- EN 572-8 - Float glass supplied and final cut sizes.
- Other parts of the EN 572 series (Parts 3–9) cover wired/patterned/glazing types and conformity evaluation.
Keywords: EN 572-2:2012, float glass, soda lime silicate glass, jumbo sizes, split sizes, oversize plates, dimensional tolerances, optical faults, spot faults, zebra test, glazing standard.
Frequently Asked Questions
SIST EN 572-2:2012 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Glass in building - Basic soda lime silicate glass products - Part 2: Float glass". This standard covers: This European Standard specifies dimensional and minimum quality requirements (in respect of optical and visual faults) for float glass, as defined in EN 572-1:2012, for use in building. This European Standard applies only to float glass supplied in jumbo sizes (see Note 1), split sizes (see Note 2) and oversize plates (see Note 3). NOTE 1 Jumbo sizes - PLF (plateau largeur de fabrication) - Bandmasse. NOTE 2 Split sizes - DLF (dimension largeur de fabrication) - Geteilte Bandmasse. NOTE 3 Oversize plates - these are plates where the nominal length, H, is greater than 6 000 mm. These plates are produced to special order. EN 572-8 gives information on float glass in sizes (i.e. supplied and final cut sizes) other than those covered by this European Standard.
This European Standard specifies dimensional and minimum quality requirements (in respect of optical and visual faults) for float glass, as defined in EN 572-1:2012, for use in building. This European Standard applies only to float glass supplied in jumbo sizes (see Note 1), split sizes (see Note 2) and oversize plates (see Note 3). NOTE 1 Jumbo sizes - PLF (plateau largeur de fabrication) - Bandmasse. NOTE 2 Split sizes - DLF (dimension largeur de fabrication) - Geteilte Bandmasse. NOTE 3 Oversize plates - these are plates where the nominal length, H, is greater than 6 000 mm. These plates are produced to special order. EN 572-8 gives information on float glass in sizes (i.e. supplied and final cut sizes) other than those covered by this European Standard.
SIST EN 572-2:2012 is classified under the following ICS (International Classification for Standards) categories: 81.040.20 - Glass in building. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 572-2:2012 has the following relationships with other standards: It is inter standard links to SIST EN 572-2:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 572-2:2012 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/135. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2012
1DGRPHãþD
SIST EN 572-2:2004
Steklo v gradbeništvu - Osnovni izdelki iz natrij-kalcijevega silikatnega stekla - 2.
del: Ravno steklo
Glass in building - Basic soda lime silicate glass products - Part 2: Float glass
Glas im Bauwesen - Basiserzeugnisse aus Kalk-Natronsilicatglas - Teil 2: Floatglas
Verre dans la construction - Produits de base : verre de silicate sodocalcique - Partie 2:
Glace
Ta slovenski standard je istoveten z: EN 572-2:2012
ICS:
81.040.20 Steklo v gradbeništvu Glass in building
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 572-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2012
ICS 81.040.20 Supersedes EN 572-2:2004
English Version
Glass in building - Basic soda lime silicate glass products - Part
2: Float glass
Verre dans la construction - Produits de base : verre de Glas im Bauwesen - Basiserzeugnisse aus Kalk-
silicate sodo-calcique - Partie 2: Glace Natronsilicatglas - Teil 2: Floatglas
This European Standard was approved by CEN on 11 May 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 572-2:2012: E
worldwide for CEN national Members.
Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Dimensional requirements .5
4.1 Thickness .5
4.1.1 General .5
4.1.2 Tolerances .6
4.2 Length, width and squareness .6
5 Quality requirements .7
5.1 General .7
5.2 Methods of observation and measurement .7
5.2.1 Optical faults .7
5.2.2 Visual faults .8
5.3 Acceptance levels .9
5.3.1 Optical faults .9
5.3.2 Spot faults .9
6 Designation . 10
Annex A (normative) Method for measuring spot fault size (including halo) . 11
A.1 Conditions of observation . 11
A.2 Measurement of the size of the spot fault including the halo . 12
Bibliography . 14
Foreword
This document (EN 572-2:2012) has been prepared by Technical Committee CEN/TC 129 “Glass in building”,
the secretariat of which is held by NBN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by January 2013, and conflicting national standards shall be withdrawn at
the latest by January 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 572-2:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This edition is a revision of EN 572-2:2004. The main changes in this edition are:
a) an enlargement of the scope to oversize plates;,
b) a new method of determination of squareness;,
c) a new method of measurement for spot fault (including halo) and an adaptation of the related
requirements.
This European Standard “Glass in building — Basic soda lime silicate glass products” consists of the following
parts:
Part 1: Definitions and general physical and mechanical properties;
Part 2: Float glass;
Part 3: Polished wired glass;
Part 4: Drawn sheet glass;
Part 5: Patterned glass;
Part 6: Wired patterned glass;
Part 7: Wired or unwired channel shaped glass;
Part 8: Supplied and final cut sizes;
Part 9: Evaluation of conformity/Product standard.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope
This European Standard specifies dimensional and minimum quality requirements (in respect of optical and
visual faults) for float glass, as defined in EN 572-1:2012, for use in building.
This European Standard applies only to float glass supplied in jumbo sizes (see Note 1), split sizes (see
Note 2) and oversize plates (see Note 3).
NOTE 1 Jumbo sizes — PLF (plateau largeur de fabrication) — Bandmasse.
NOTE 2 Split sizes — DLF (dimension largeur de fabrication) — Geteilte Bandmasse.
NOTE 3 Oversize plates – these are plates where the nominal length, H, is greater than 6 000 mm. These plates are
produced to special order.
EN 572-8 gives information on float glass in sizes (i.e. supplied and final cut sizes) other than those covered
by this European Standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 572-1:2012, Glass in building — Basic soda lime silicate glass products — Part 1: Definitions and general
physical and mechanical properties
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 572-1:2012 and the following apply.
3.1
length, H, and width, B
defined with reference to the direction of draw of the float glass ribbon as shown in Figure 1
Key
1 direction of draw
Figure 1 — Relationship between length, width and direction of draw
3.2
jumbo sizes
glass delivered in the following sizes:
– nominal length H: 4 500 mm, 5 100 mm or 6 000 mm;
– nominal width B: 3 210 mm
Note 1 to entry: The usual width is 3 210 mm. Exceptional production requirements can cause this to be reduced but
the nominal width is never less than 3 150 mm.
3.3
split sizes
glass delivered in the followi
...
The article discusses the European Standard EN 572-2:2012, which specifies the requirements for float glass used in building construction. The standard defines the dimensional and quality criteria for float glass, particularly in terms of optical and visual faults. It applies specifically to float glass supplied in jumbo sizes, split sizes, and oversize plates.
記事のタイトル: SIST EN 572-2:2012 - 建築用ガラス - 基本的なソーダライムシリカガラス製品 - 第2部: フロートガラス 記事の内容: このヨーロッパ規格は、建築に使用されるフロートガラスの寸法と最低品質要件（光学的および視覚的な欠陥について）を規定しています。このヨーロッパ規格は、FprEN 572-1:2011で定義されたフロートガラスにのみ適用されます。この規格は、ジャンボサイズ、分割サイズ、オーバーサイズプレートで供給されるフロートガラスにのみ適用されます。
기사 제목: SIST EN 572-2:2012 - 건축용 유리 - 기본 소다 석회 실리케이트 유리 제품 - 제2부: 플로트 유리 기사 내용: 이 유럽 표준은 건축에 사용되는 플로트 유리의 치수 및 최소 품질 요구 사항(광학 및 시각적 결함에 대한)을 규정한다. 이 유럽 표준은 FprEN 572-1:2011에서 정의된 플로트 유리에만 적용된다. 이 표준은 주름 크기, 분할 크기 및 초과 크기의 플로트 유리에만 적용된다.
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